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Question
1:
Penetration
Theory
(a) Briefly
outline
the
principles
underpinning
the
penetration
theory
of mass
transfer.(b) The
mathematical
model
for
penetration
theory
relies
on
the
solution of
Fick’s
second
law: subject
to
the
following
boundary
conditions
(note
that
ci
is
a
constant
value,
and
represents
an
interfacial
concentration).
(i) Define
all
of
the
symbols
in
the
equation
for
Fick’s
second
law. (ii) Explain
whether
the
boundary
conditions
correspond
to
the case
of
semi-‐infinite
diffusion.(iii) Using
the
method
of
Laplace
tr